Ruled reinforcing bar



June l0, 1941. T. H. lHoPKlNs 2,245,133

` RULED REINFORCING BAR Filed Aug. 4, 1940 l nyvNToR Patented June 10, 1941 UNITED STATES PATENT OFFICE RULED REINroncINo BAR Thomas H. Hopkins, Mobile, Ala. Application August 4, 1940, Serial No. 351,345

My invention relates to me'tal bars for reinforcing. concrete, and has for its principal object the pro-vision of a linear scale whereby uniform divisions of the entire length of the bar are Visually indicated in feet, inches and fractions oi an inch. Other objects of my invention are to provide the core of the bar with a mechanical bond; to maintain the cross section of the bar of uniform shape and size; to so arrange the bonding members that the bars may be rolled in the usualA conventional manner; and to secure other advantages hereinafter more fulli7 appearing.

My invention consists principally in a bar so deformed that the deformations not only provide for an adequate bond to the concrete but in addition thereto serve as visual indicators of units of length in feet, inches, and fractions o1" an inch along the entire length of the bar. It is obvious vthat such a bar, incorporating an integral scale of length, would present an economical factor in the placing of steel for reinforced concrete by minimizing the time and labor required in the mensuration of bars `for bending, hooking, cutting, and spacing.

In the accompanying drawing:

1 Figs 1 andla represent a side View of the same bar but at adjacent sections and in two lines, respectively, embodying my invention showing a continuous length than two feet. It is to be noted that the length of the bar is shown on two lines due to the limitation of the size of the drawing.

Figs. 2, 3, 4, 5, 6, 7, and 8 are cross sections on lines 2 2, 3 3, 4 4, 5 5, 5 6, 1 1, and 8 8,

Fig. 1.

Fig. 9 is a side View of a bar of square cross section embodying my invention.

Figs. 10, ll, 12, and 13 are cross sections on lines I l0, H ll, I2 I2, and 13 13, Fig. 9.

Similar numerals refer to similar parts throughout the several views.

In the'illustrated specimen of my invention the core of the bar is denoted by the numeral l which is of any desired or predetermined length.

In Figs. 1 to 8, inclusive, a bar having substantially a round cross sectional shape is maintained smooth of surface throughout its length except as modiiied by the deformations 2, 3, 4, and 5. As the main purpose of the bar is to aord visual means of mensuration the deformations are so arranged as to indicate units of length. In order to facilitate description and illustrate the purpose of the bar a measuring tape 1 has been superimposed on the drawing.

of the bar of a little more s claims. lol. zz-111) Each foot of length of the bar is indicated by the diametrically opposed longitudinal ribs 5 which extend parallel to 'the axis of the bar and lWhose ends terminate at alternate transverse ribs 2, each pair of diametrically opposed longi- 'tudinal ribs 5 being substantially one foot in length are staggered with respect to the transverse position of any adjacent pair of diametri- `cally opposed longitudinal ribs 5. The transverse ribs 2 extend completely around the core and are spaced at exactly six inches center to center. Five pairs of diametrically opposed transverse ribs 3 are equally spaced at exa'ctly one inch center to center longitudinaly between all transverse ribs 2, each Ttransverse rib 3 spanning an arc of approximately 45 degrees on each side of the centerline of the longitudinal ribs 5. Spaced longitudinally at exactly one-half inch between any two above mentioned transverse ribs are relatively small pointers or teats 4 on each longitudinal rib 5. It can be readily seen that with this system of deformation continuous throughout the length of the'bar that each foot of length of the bar isi clearly and rapidly visible by Virtue of the plain long lines presented by the one foot long staggered longitudinal ribs 5. One-half foot indicators are presented by the transverse ribs 2 spaced at one-halfv the length of the longitudinal ribs 5. Inches are clearly indicated \by the transverse ribs 3 and one-half inches are indicated bythe teats 4 on the longitudinal ribs 5. K. To illustrate one practical use oi this reinforcing bar four bars 5 are shown spaced at three and. one-half inches in Fig. 1.

In Figs. 9 to 13, inclusive, a bar having substantially a square cross sectional shape is similar in construction to the round bar. The transverse ribs2 and 3, the longitudinal ribs 5 and theteats 4 are all spaced and positioned as described above for the round bar. The transverse ribs 2 extend around the four falces of the bar. The transverse ribs 3 extend from the longitudinal ribs 5 to each edge of its respective face substantially.

It is to be understood that the transverse ribs 2 and 3, the longitudinal ribs 5 and the teats 4, all form an integral mass of metal with the core of the bar I. To adapt the bar for practical manufacture in the rolling mill, and to avoid sharp angles, the shoulders of the ribs taper slightly outwardly, and llets are formed at the bases of such shoulders. In order to avoid sharp exterior angles, all exterior edges are rounded. The sizes of all the ribs of the bar are such that their weights are properly propor- 'one-half inch divisions of tioned so as to render such a bar uniform in weight per foot of length throughout the length of the lbar.

Obviously, my bar admits of considerable modiiication without departing from my invention and I do not wish to be restricted to the construction shown.

What I claim is:

1. A reinforcing bar comprising a core of substantially round section having a series of diametrically opposed longitudinal ribs extending parallel to the axis of said bar, the ends of each pair of said longitudinal ribs of each series terminating at their junction with transverse ribs that extend around said core and spaced at exactly one foot center to center throughout the length of said bar, each pair of said longitudinal ribs of each series being staggered with respect to the transverse posi-tion of any adjacent pair, each such series being indicative of each foot of length of said bar, said core having further transverse ribs extending from each one of said longitudinal ribs around said core tothe opposite longitudinal rib and spaced longitudinally at the mid-point of every longitudinal rib, thereby being indicative of each one-half foot of length of said bar, said core having still further transverse ribs which span an equal arc on each side of the centerline of each said longitudinal rib, equally spaced at exactly one inch center to center between one-half foot indicating transverse ribs and one foot indicating transverse ribs throughout the length of said bar, thereby indicating one inch divisions of said bar, each said longitudinal rib having relatively small transverse teats spaced at exactly one-half inch between all transverse ribs, thereby indicating said bar, substantially as described.

2. A reinforcing bar comprising a core of substantially square section having a series of diametrically opposed longitudinal ribs extending parallel to the axis of said bar, the ends of each pair of said longitudinal ribs of each series terminating at their junction with transverse ribs that extend around the four faces of said core and spaced at exactly onefoot center to center throughout the length of said bar, each pair of said longitudinal ribs of each series being staggered with respect to the transverse position of any adjacent pair, each such series being indicative of each foot of length of said bar, said core having further transverse ribs extending from each one of said longitudinal ribs around said core to the opposite longitudinal rib and spaced longitudinally at the mid-point of every longitudinal rib, thereby being indicative of each one-half foot of length of said bar, said core having stillfurther transverse ribs which extend on each side of each said longitudinal rib to the edge, substantially, of its respective face, equally spaced at one-half inch center to center between one-half foot indicating transverse ribs and one foot indicating transverse ribs .throughout -the length of said bar, thereby indicating one inch divisions of said bar, each said longitudinal rib having relatively small transverse teats spaced at exactly one-half inch between all transverse ribs, thereby indicating one-half inch divisions of said bar.

3. A reinforcing bar comprising a core of uniform sectional shape throughout its length having a series of longitudinal ribs co-extensive with said bar, said longitudinal ribs being on opposite sides of said core in each series and staggered with respect to the transverse position of any adjacent series of longitudinal ribs, the length of said longitudinal ribs indicating units of length, such as feet, throughout the length of said bar.

4, A reinforcing bar comprising a core of uniform sectional shape throughout its length having a series of longitudinal ribs co-extensive Wtih said bar, said longitudinal ribs being on opposite sides of said core in each series and staggered with respect to the transverse position of any adjacent series of longitudinal ribs, the ends of said longitudinal ribs terminating at transverse ribs extending around said core, the length of said longitudinal ribs together with said transverse ribs indicating units of length, such as feet, throughout the lengthrof said bar.

5. A reinforcing bar comprising a core kof uniform sectional shape throughout its length, having a series of diametrically opposed and spaced transverse ribs or lugs, each series of transverse ribs or lugs being staggered with respect to the i ransverse position of any adjacent series of spaced transverse ribs or lugs, each series of spaced ribs or lugs indicating units of .length of said bar, such as feet, and each transverse rib or lug indicating units of length of each series, such as inches.

6. A reinforcing bar comprising a core of uniform sectional shape throughout its length having deformations indicative of each foot of length of said bar and further deformations indicative of fractional or decimal divisions of eachfoot of said bar, each foot of length of said bar being indicated by longitudinal ribs on opposite sides and co-extensive with said bar, the ends of said longitudinal ribs terminating at their junction with transverse ribs spaced at exactly one foot center to center throughout the length of said bar, each pair of longitudinal ribs being staggered with respect to the transverse position of any adjacent pair, fractional or decimal divisions of each foot of said bar being indicated by appropriately spaced transverse ribs or lugs.

THOMAS I-I. HOPKINS. 

